Endocrine Abstracts

Introduction: Extremely low levels of vitamin D usually include levels < 4 ng/ml, which is almost the same as undetectable. The risk groups for vitamin D deficiency have been identified, but do they allow such patients to be identified based solely on clinical presentation.Objective: To identify risk factors and their actual clinical determination in patients with 25(OH)D serum levels <4 ng/ml.Materials and methods: The stu...